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Technical Instructions

Document No. 155-050P25

SW 134-3

April 1, 2005

SW 134 Pressure Electric Switch

(Adjustable Differential)

Siemens Industry, Inc.

Description

The SW 134 Pressure Electric Switch actuates electrical circuits from pneumatic control

signals.

Features

• Double-Pole, Single-Throw (DPST), snap-acting

• External adjustment and indication of setpoint and differential

• Screw terminals are easily accessible for field wiring

• Long life, heavy duty contact mechanism

• Normally open or normally closed contact models available

• Not position-sensitive, can be mounted in any position

• Mounting bracket and two screws included

Product Numbers

Table 1.

Product Number Description

134-1450 Pressure Electric Switch, normally open,

close on pressure rise

134-1451 Pressure Electric Switch, normally closed,

open on pressure rise

Summary of content (5 pages)

PAGE 1
Technical Instructions Document No. 155-050P25 SW 134-3 April 1, 2005 PowersTM Controls SW 134 Pressure Electric Switch (Adjustable Differential) Description The SW 134 Pressure Electric Switch actuates electrical circuits from pneumatic control signals.
PAGE 2
Technical Instructions Document Number 155-050P25 April 1, 2005 SW 134 Pressure Electric Switch (Adjustable Differential) Warning/Caution Notations Application WARNING Personal injury/loss of life may occur if you do not perform a procedure as specified. CAUTION Equipment damage, or loss of data may occur if you do not perform a procedure as specified.
PAGE 3
SW 134 Pressure Electric Switch (Adjustable Differential) Technical Instructions Document Number 155-050P25 April 1, 2005 Operation, Continued Table 2. Electrical Ratings. Motor Ratings 120V 240V 208V 277V A.C. Full Load Amps 12.0 12.0 12.0  A.C. Locked Rotor Amps 72.0 72.0 72.0  A.C. Non-lnductive Amps 12.0 12.0 12.0 12.0 D.C. Non-lnductive Amps 3.0 0.5 0.5  Pilot Duty- Mounting and Installation 125 VA 120/600 Vac 57.
PAGE 4
Technical Instructions Document Number 155-050P25 April 1, 2005 Wiring, Continued SW 134 Pressure Electric Switch (Adjustable Differential) • Make all wiring connections using only copper conductors and in accordance with the National Electrical Code and local regulations. Loads exceeding the rating of the switches should be controlled by means of an intermediate relay or starter. • Loosen the screw on the front cover of the switch for access to the terminals.
PAGE 5
SW 134 Pressure Electric Switch (Adjustable Differential) Technical Instructions Document Number 155-050P25 April 1, 2005 Dimensions Figure 3. Dimensions in Inches (Millimeters). Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design improvements are introduced. Powers is a registered trademark of Siemens Industry, Inc.